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苏铁,俗称铁树,属铁树科植物,分布在印度尼西亚至我国南方一带。因为苏铁难得开花一次,因此,苏铁在我国一直是通过无性繁殖来培育新苗的,至今尚未有关通过人工手段促成苏铁有性繁殖的报导。 相似文献
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This paper reports chromosome number and karyotype analysis of
Cycas panzhihuaensis endemic to China. The material was collected from Dukou, Si-
chuan. It is a diploid species, with 2n=22=2m+4sm+4st+l2t. The karyotype of Cycas
panzhihuaensis is different from that of the other species of the genus Cycas, which
was known to be 2n=4m+8st+10t. The former is a new karyotype in the genus. The
authors briefly discuss karyotype evolution of the genus Cycas in this papar. 相似文献
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